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https://www.readbyqxmd.com/read/28448064/changes-in-thyroid-hormone-concentrations-during-neonatal-extracorporeal-membrane-oxygenation
#1
L Leeuwen, A F J van Heijst, J van Rosmalen, Y B de Rijke, L W J E Beurskens, D Tibboel, E L T van den Akker, H IJsselstijn
OBJECTIVE: Thyroid hormone concentrations can be disturbed during critical illness. Our aim was to determine changes in thyroid hormone concentrations during neonatal extracorporeal membrane oxygenation (ECMO). STUDY DESIGN: We included 21 ECMO-treated neonates. Age-specific s.d. scores (SDS) of free and total thyroxine (FT4; TT4), reverse and total triiodothyronine (rT3; TT3), thyroid-stimulating hormone (TSH) and thyroxine-binding globulin (TBG) were determined at six fixed time-points...
April 27, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28419643/post-lunch-triglyceridaemia-associates-with-hdlc-and-insulin-resistance-in-fasting-normotriglyceridaemic-menopausal-women
#2
A Sanz-Paris, A Rodriguez-Valle, M A Navarro, J Puzo-Foncillas, J M Arbones-Mainar
OBJECTIVES: Post-prandial hypertriglyceridaemia (P-HTG) is associated with cardiovascular disease. This association is of paramount importance during menopause, which is also related to reduced high-density lipoprotein-cholesterol (HDLc) and elevated triglyceride (TG) levels. We aimed to provide a self-assesing tool to screen for P-HTG in menopausal women who were normotriglyceridaemic at fasting and adhered to a Mediterranean-style eating pattern. METHODS: We performed oral fat loading tests (OFLT) in combination with self-measurements of diurnal capillary TG at fixed time-points (DC-TG) in 29 healthy menopausal women...
April 17, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28415252/clogging-and-jamming-transitions-in-periodic-obstacle-arrays
#3
H T Nguyen, C Reichhardt, C J Olson Reichhardt
We numerically examine clogging transitions for bidisperse disks flowing through a two-dimensional periodic obstacle array. We show that clogging is a probabilistic event that occurs through a transition from a homogeneous flowing state to a heterogeneous or phase-separated jammed state where the disks form dense connected clusters. The probability for clogging to occur during a fixed time increases with increasing particle packing and obstacle number. For driving at different angles with respect to the symmetry direction of the obstacle array, we show that certain directions have a higher clogging susceptibility...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28409223/the-relationships-between-message-passing-pairwise-kermack-mckendrick-and-stochastic-sir-epidemic-models
#4
Robert R Wilkinson, Frank G Ball, Kieran J Sharkey
We consider a very general stochastic model for an SIR epidemic on a network which allows an individual's infectious period, and the time it takes to contact each of its neighbours after becoming infected, to be correlated. We write down the message passing system of equations for this model and prove, for the first time, that it has a unique feasible solution. We also generalise an earlier result by proving that this solution provides a rigorous upper bound for the expected epidemic size (cumulative number of infection events) at any fixed time [Formula: see text]...
April 13, 2017: Journal of Mathematical Biology
https://www.readbyqxmd.com/read/28408335/optimizing-delivery-of-a-behavioral-pain-intervention-in-cancer-patients-using-a-sequential-multiple-assignment-randomized-trial-smart
#5
Sarah A Kelleher, Caroline S Dorfman, Jen C Plumb Vilardaga, Catherine Majestic, Joseph Winger, Vicky Gandhi, Christine Nunez, Alyssa Van Denburg, Rebecca A Shelby, Shelby D Reed, Susan Murphy, Marie Davidian, Eric B Laber, Gretchen G Kimmick, Kelly W Westbrook, Amy P Abernethy, Tamara J Somers
BACKGROUND/AIMS: Pain is common in cancer patients and results in lower quality of life, depression, poor physical functioning, financial difficulty, and decreased survival time. Behavioral pain interventions are effective and nonpharmacologic. Traditional randomized controlled trials (RCT) test interventions of fixed time and dose, which poorly represent successive treatment decisions in clinical practice. We utilize a novel approach to conduct a RCT, the sequential multiple assignment randomized trial (SMART) design, to provide comparative evidence of: 1) response to differing initial doses of a pain coping skills training (PCST) intervention and 2) intervention dose sequences adjusted based on patient response...
April 11, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28406966/continuous-uniformly-finite-time-exact-disturbance-observer-based-control-for-fixed-time-stabilization-of-nonlinear-systems-with-mismatched-disturbances
#6
Junkang Ni, Chongxin Liu, Hang Liu
This paper presents a continuous composite control scheme to achieve fixed-time stabilization for nonlinear systems with mismatched disturbances. The composite controller is constructed in two steps: First, uniformly finite time exact disturbance observers are proposed to estimate and compensate the disturbances. Then, based on adding a power integrator technique and fixed-time stability theory, continuous fixed-time stable state feedback controller and Lyapunov functions are constructed to achieve global fixed-time system stabilization...
2017: PloS One
https://www.readbyqxmd.com/read/28388472/robust-fixed-time-synchronization-for-uncertain-complex-valued-neural-networks-with-discontinuous-activation-functions
#7
Xiaoshuai Ding, Jinde Cao, Ahmed Alsaedi, Fuad E Alsaadi, Tasawar Hayat
This paper is concerned with the fixed-time synchronization for a class of complex-valued neural networks in the presence of discontinuous activation functions and parameter uncertainties. Fixed-time synchronization not only claims that the considered master-slave system realizes synchronization within a finite time segment, but also requires a uniform upper bound for such time intervals for all initial synchronization errors. To accomplish the target of fixed-time synchronization, a novel feedback control procedure is designed for the slave neural networks...
March 23, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28364772/a-perturbation-theoretic-approach-to-lagrangian-flow-networks
#8
Naoya Fujiwara, Kathrin Kirchen, Jonathan F Donges, Reik V Donner
Complex network approaches have been successfully applied for studying transport processes in complex systems ranging from road, railway, or airline infrastructures over industrial manufacturing to fluid dynamics. Here, we utilize a generic framework for describing the dynamics of geophysical flows such as ocean currents or atmospheric wind fields in terms of Lagrangian flow networks. In this approach, information on the passive advection of particles is transformed into a Markov chain based on transition probabilities of particles between the volume elements of a given partition of space for a fixed time step...
March 2017: Chaos
https://www.readbyqxmd.com/read/28364661/fixed-time-stability-of-dynamical-systems-and-fixed-time-synchronization-of-coupled-discontinuous-neural-networks
#9
Cheng Hu, Juan Yu, Zhanheng Chen, Haijun Jiang, Tingwen Huang
In this paper, the fixed-time stability of dynamical systems and the fixed-time synchronization of coupled discontinuous neural networks are investigated under the framework of Filippov solution. Firstly, by means of reduction to absurdity, a theorem of fixed-time stability is established and a high-precision estimation of the settling-time is given. It is shown by theoretic proof that the estimation bound of the settling time given in this paper is less conservative and more accurate compared with the classical results...
May 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28355579/stability-of-bk-polyomavirus-igg-seroreactivity-and-its-correlation-with-preceding-viremia
#10
Herman F Wunderink, Els van der Meijden, Caroline S van der Blij-de Brouwer, Hans L Zaaijer, Aloys C M Kroes, Erik W van Zwet, Joris I Rotmans, Mariet C W Feltkamp
BACKGROUND: Recently we showed that the level of BK polyomavirus (BKPyV) IgG seroreactivity in kidney donors predicted viremia and BKPyV-associated nephropathy in kidney transplant recipients (KTRs). This observation could be explained by assuming a direct association between BKPyV seroreactivity and the amount of persistent infectious virus in the renal allograft. OBJECTIVES: Since the renal BKPyV reservoir is probably sowed by viremia during primary BKPyV infection, we systematically analysed the dynamics of BKPyV IgG seroreactivity in relation to preceding BKPyV viremia in KTRs and healthy individuals...
March 19, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28348920/a-new-kinetic-spectrophotometric-method-for-the-quantitation-of-amorolfine
#11
César Soto, Cristian Poza, David Contreras, Jorge Yáñez, Fallon Nacaratte, M Inés Toral
Amorolfine (AOF) is a compound with fungicide activity based on the dual inhibition of growth of the fungal cell membrane, the biosynthesis and accumulation of sterols, and the reduction of ergosterol. In this work a sensitive kinetic and spectrophotometric method for the AOF quantitation based on the AOF oxidation by means of KMnO4 at 30 min (fixed time), pH alkaline, and ionic strength controlled was developed. Measurements of changes in absorbance at 610 nm were used as criterion of the oxidation progress...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28346665/effects-of-ovarian-structures-identified-at-ovsynch%C3%A2-enrolment-disease-history-and-lactation-variables-on-odds-of-pregnancy-to-a-fixed-time-artificial-insemination-after-ovsynch%C3%A2
#12
L Ingenhoff, E Hall, S Ranjbar Ni, J K House
OBJECTIVE: To determine the effects of ovarian structures present at Ovsynch™ enrolment, disease history, lactation variables and times bred on pregnancy per fixed-time artificial insemination (FTAI) following fixed-time insemination after Ovsynch and to determine the relationship between the size of ovarian follicular structures and concurrent presence of a corpus luteum (CL). METHODS: The study was conducted in a 3000-cow Holstein dairy herd. Over a 6-month period, 886 non-pregnant cows were examined by transrectal ultrasound and enrolled into 1132 Ovsynch events...
April 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28336448/permanent-implants-for-lip-augmentation-results-from-a-retrospective-study-and-presentation-of-tips-and-tricks
#13
S Guida, V D Mandel, F Farnetani, C M Manola, G Rubino, S Ruzzu, G Pellacani, C Longo, G G Urtis
BACKGROUND: Requests for lip augmentation are increasing because of expanding media exposure and consumer needs. Temporary effects can be obtained by several techniques, but a recent procedure consisting of lip prosthesis implantation, offering a permanent result, is emerging. Accordingly, the implantation of solid lip prosthesis represents an innovation in the field of esthetic medicine and surgery. METHODS: A total of 100 women with atrophic or hypoplastic lips were treated with lip implants...
May 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28295685/estimation-of-genetic-parameters-for-functional-longevity-in-the-south-african-holstein-cattle-using-a-piecewise-weibull-proportional-hazards-model
#14
V E Imbayarwo-Chikosi, V Ducrocq, C B Banga, T E Halimani, J B van Wyk, A Maiwashe, K Dzama
Non-genetic factors influencing functional longevity and the heritability of the trait were estimated in South African Holsteins using a piecewise Weibull proportional hazards model. Data consisted of records of 161,222 of daughters of 2,051 sires calving between 1995 and 2013. The reference model included fixed time-independent age at first calving and time-dependent interactions involving lactation number, region, season and age of calving, within-herd class of milk production, fat and protein content, class of annual variation in herd size and the random herd-year effect...
March 14, 2017: Journal of Animal Breeding and Genetics, Zeitschrift Für Tierzüchtung und Züchtungsbiologie
https://www.readbyqxmd.com/read/28293772/reading-efficiency-can-be-improved-by-minor-modification-of-assigned-duties-a-pilot-study-on-a-small-team-of-general-radiologists
#15
Hajime Yokota, Mariko Goto, Chisa Bamba, Maki Kiba, Kei Yamada
PURPOSE: To assess whether alterations in the type of duty assignment system can affect the reading efficiency and stress level of diagnostic radiologists. MATERIALS AND METHODS: Fourteen board-certified diagnostic radiologists were enrolled. We investigated three different reading systems for 1 week each. System 1 is our default, in which there are no assigned duties and everyone finishes when all cases are done. In system 2, two late shift readers are assigned every day, and, after everyone else leaves at a fixed time (5:30 p...
March 14, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28257872/the-effect-of-presynch-ovsynch-protocol-with-or-without-estrus-detection-on-reproductive-performance-by-parity-and-the-long-term-effect-of-these-different-management-strategies-on-milk-production-reproduction-health-and-survivability-of-dairy-cows
#16
V S Machado, R C Neves, F S Lima, R C Bicalho
During the Presynch-Ovsynch protocol, at least half of the cows enrolled display signs of estrus, which can present as an opportunity for cows to be inseminated before the completion of the protocol. The primary objective of this study is to compare two management strategies for first service using the Presynch-Ovsynch protocol: insemination at completion of the Presynch-Ovsynch program (TAIonly) or insemination after estrus detection during the Presynch-Ovsynch protocol, with the remainder of cows being inseminated at timed artificial insemination (ED + TAI)...
April 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28237336/effect-of-numbers-of-sperm-and-timing-of-a-single-post-cervical-insemination-on-the-fertility-of-weaned-sows-treated-with-ovugel-%C3%A2
#17
R V Knox, K C Esparza-Harris, M E Johnston, S K Webel
Variability in estrus and ovulation requires multiple inseminations during estrus to ensure one AI occurs close to ovulation. Induction of ovulation after weaning improves synchrony of ovulation and allows for fixed time AI. However, the interaction between number of sperm in the AI dose and the timing of insemination has not been fully investigated. The objective of this study was to determine the effects of sperm numbers used in a single post-cervical insemination (PCAI) and the timing of insemination following induced ovulation in weaned sows...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28237335/evaluation-of-the-14-d-cidr-pg-and-9-d-cidr-pg-protocols-for-synchronization-of-estrus-in-bos-indicus-influenced-and-bos-taurus-beef-heifers
#18
J M Thomas, J W C Locke, B E Bishop, J M Abel, M R Ellersieck, J V Yelich, S E Poock, M F Smith, D J Patterson
Two long-term, CIDR-based estrus synchronization protocols were evaluated among Bos indicus-influenced and Bos taurus beef heifers. Treatments were evaluated on the basis of estrous response and pregnancy rate resulting from fixed-time artificial insemination (FTAI), and these outcomes were analyzed retrospectively relative to reproductive tract score (RTS; Scale 1-5) at treatment initiation. Estrus was synchronized for 1139 heifers in three locations, and heifers were assigned to one of two treatments within each location based on RTS...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28236581/single-simultaneous-and-sequential-applications-of-ultrasonic-frequencies-for-the-elimination-of-ibuprofen-in-water
#19
Asu Ziylan-Yavas, Nilsun H Ince
The study is about the assessment of single and multi-frequency operations for the overall degradation of a widely consumed analgesic pharmaceutical-ibuprofen (IBP). The selected frequencies were in the range of 20-1130kHz emissions coming from probes, baths and piezo-electric transducers attached to plate-type devices. Multi-frequency operations were applied either simultaneously as "duals", or sequentially at fixed time intervals; and the total reaction time in all operations was 30-min. The work also covers evaluation of the effect of zero-valent iron (ZVI) on the efficiency of the degradation process and the performance of the reaction systems...
January 26, 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28236348/fixed-time-interval-compared-with-on-demand-oral-analgesia-protocols-for-post-caesarean-pain-a-randomised-controlled-trial
#20
E Yefet, H Taha, R Salim, J Hasanein, Y Carmeli, N Schwartz, Z Nachum
OBJECTIVES: To compare the efficacy, safety and satisfaction from two modes of oral analgesia administration for the treatment of post-caesarean pain in the first 48 h following surgery: on-demand versus fixed time interval administration. DESIGN: Open label parallel-group, randomised-controlled trial from February to December 2013. SETTING: University-affiliated hospital in Israel. POPULATION: Two-hundred women who underwent caesarean delivery with regional anaesthesia...
February 25, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
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